Hey uhh... What's up with classic headcrabs? I've been replaying entropy:zero 2 and I finally decided to ask why they are different than normal headcrabs (in a biological sense). I get why they were added and I like them but species take VERY, VERY LONG to change that drastically. Just asking :)
I personally assumed that the normal headcrabs in Half Life 2 + onwards were breeds that were genetically modified by the Combine, which would make them look a bit different from the classic headcrabs teleported in straight from Xen